Damping behavior of Mg-Zn-Al casting alloys

Damping capacities exhibited a decreasing tendency in the order of Mg-8%Zn-2%Al, Mg-6%Zn-4%Al and Mg-9%Al-1%Zn alloys both in the strain-amplitude independent and dependent regions. This is ascribed to the increased values of (Zn+Al) atomic concentration in α-(Mg) matrix and the amount of precipitates, respectively.